*{
    margin: 0;
    padding: 0;
}
.nav{
    width: 100%;
    height: 110px;
    /* border: 1px solid black; */
    display: flex;
}
.nav>span{
    line-height: 110px;
    font-size: 48px;
}
.nav>div{
    position: absolute;
    right: 0;
}
.nav{
    border-bottom:1px solid gray;
}
.head li{
    list-style: none;
    float: left;
    width: 90px;
    text-align: center;
    border-left:1px solid gray ;
}
.head ul{
    height: 45px;
}
.dropdown{
    width: 980px;
    height: 35px;
    background-color: #dcedf7;
    text-align: left;
    display: none;
}
.head>ul:hover .dropdown{
    display:block ;
}
.article{
    width: 600px;
    height: 900px;
    /* border: 1px solid black; */
}
.section{
    width: 600px;
    height: 900px;
    /* border: 1px solid black; */
}
.content{
    display: flex;
    justify-content: space-evenly;
    margin-top: 20px;
}
.photo{
    width: 600px;
    display: flex;
    justify-content: space-between;
}
.ph_nr{
    width: 150px;
    display: inline-block;
    margin-right: 45px;
}
.section_left{
    width: 200px;
    /* border: 1px solid red; */
}
.section_left>div{
    border-bottom:1px solid gray;
    margin-top: 20px;
}
.section{
    display: flex;
}
.section_right li{
    list-style: none;
    height: 35px;
}
.section_right>ul{
    margin-bottom: 20px;
    margin-left: 20px;
    border-top: 2px solid black;
}
.section_right>ul>li:nth-child(1){
    background-color: #f2f5fa;
    font-weight: bold;
}
.foot_nr{
    width: 250px;
    height: 150px;
    /* border:1px solid red; */
}
.footer{
    display: flex;
    justify-content: center;
}
.foot_nr>a{
    display: flex;
    align-self: flex-start;
}
.end{
    display: flex;
    justify-content: space-between;
}
.end li{
    list-style: none;
    margin-right: 20px;
}
.end ul{
    display: flex;
}
.over{
    text-align: center;
}